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Browse 20,456 Linux Software on AlternativeTo with popular options like Linux and Linux + Free.

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  1. Firefox Developer Edition brings you latest features, fast performance, and the development tools you need to build for the open web. Its powerful development tools will extend your ability to work across multiple platforms from one place.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • PortableApps.com
    Firefox Developer Edition screenshot 1
    Shapes Editor
    Master CSS Grid
    +2
    Fonts Panel
    180 alternatives
  2. OpenSSH icon
     392 likes

    OpenSSH is a free version of the SSH connectivity tools that technical users rely on. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • iPhone
    • BSD
    • Cygwin
    • Haiku
    • Linux Mobile
    61 alternatives
  3. I2P icon
     246 likes

    The I2P network provides strong privacy protections for communication over the Internet. Many activities that would risk your privacy on the public Internet can be conducted anonymously inside I2P.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    • F-Droid
    I2P screenshot 1
    I2P screenshot 1
    I2P screenshot 2
    +1
    I2P screenshot 3
    47 alternatives
    3.4
    Fair10 reviews
  4. GNU Emacs icon
     389 likes

    GNU Emacs is an extensible, customizable text editor—and more. At its core is an interpreter for Emacs Lisp, a dialect of the Lisp programming language with extensions to support text editing. The features of GNU Emacs include:

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    • Snapcraft
    • F-Droid
    • Haiku
    • Debian
    • MacPorts
    • Homebrew
    The GNU Emacs Manual calls Emacs the extensible, customizable, self-documenting real-time display editor
    Beyond just being able to edit plain text files, Emacs includes special features to help you write in many different human languages and programming/markup languages
    GNU Emacs screenshot 2
    +6
    GNU Emacs screenshot 3
    187 alternatives
    4.3
    Very Good16 reviews
  5. MKVToolnix icon
     239 likes

    MKVToolnix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices and Windows. They do for Matroska what the OGMtools do for the OGM format and then some. The latest builds now have the ability to create WebM compliant Files.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    Works with VxKex NEXT (https://alternativeto.net/software/vxkex-next/)
    MKVToolnix v89.0 in Dark Mode
    MKVToolnix v89.0 in Light Mode
    +5
    MKVToolnix screenshot 3
    33 alternatives
  6. RawTherapee icon
     238 likes

    Powerful cross-platform raw photo processing software offering advanced user control over demosaicing and development. Supports HDR DNGs and image formats.

    Cost / License

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Snapcraft
    • Flathub
    • PortableApps.com
    • Flatpak
    RawTherapee screenshot 1
    RawTherapee screenshot 1
    RawTherapee screenshot 2
    +11
    RawTherapee screenshot 3
    62 alternatives
  7. opencode icon
     38 likes

    Terminal-based AI coding assistant with native UI, LSP support, shareable session links, multi-model integration, multi-session management, and open source licensing.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    opencode screenshot 1
    83 alternatives
  8. Natron icon
     222 likes

    Natron is an open source, cross platform nodal compositing application. It is built around industry standard open source tech such as OpenFX, OpenEXR, OpenColorIO and OpenImageIO. The feature set includes realtime playback/RAM cache, multi-threaded rendering, 2d tracking...

    Cost / License

    Platforms

    • Mac
    • Windows
    • Linux
    • FreeBSD
    • Flathub
    Natron screenshot 1
    Natron screenshot 1
    21 alternatives
    3.8
    Good6 reviews
  9. IntelliJ IDEA icon
     444 likes

    IntelliJ IDEA is the JetBrains IDE for pro development in Java and Kotlin. Built for your comfort, it unlocks productivity, ensures quality code, supports cutting-edge tech, and protects your privacy.

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    IntelliJ IDEA interface overview: the Project tool window (left) outlines the code structure and the Editor (right) is used to read, write, and explore the source code.
    Inspections help find probable bugs and dead code, detect performance issues, and improve the overall code structure by providing quick-fixes for any code that contains potential concerns.
    In the Search Everywhere window, you can search for files, actions, classes, symbols, settings, UI elements, and anything in Git, all from a single entry point.
    +1
    IntelliJ IDEA provides first-class support for leading frameworks with dedicated assistance for Jakarta EE, JPA, Reactor, Spring and Spring Boot, and other popular frameworks.
    65 alternatives
    4.1
    Very Good10 reviews
  10. Claude Code icon
     39 likes

    AI assistant for terminal-based development optimized with advanced code understanding, codebase search, multi-file editing, IDE integration, and explicit user control.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Visual Studio Code
    • Homebrew
    • npm
    • JetBrains IDE
    • Online
    Claude Code screenshot 1
    Claude Code screenshot 1
    Claude Code screenshot 2
    +3
    Claude Code screenshot 3
    110 alternatives
  11. Firefox Sync icon
     301 likes

    Lets you sync your data and preferences (such as your bookmarks, history, passwords, open tabs and installed add-ons) across all your devices. It's free to use.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • Mozilla Firefox
    Firefox Sync screenshot 1
    38 alternatives
  12. Portal icon
     448 likes

    Portal™ is a puzzle game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative games on the horizon and will offer gamers hours of unique gameplay.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Steam
    • Playstation
    • Xbox
    Banner
    Portal screenshot 1
    Portal screenshot 2
    +5
    Portal screenshot 3
    19 alternatives
  13. Koofr icon
     151 likes

    Koofr is a safe, secure and simple way to store, backup and share your documents, photos, videos and more. It offers up to 10 GB of free safe storage for your files with affordable upgrades and options to connect multiple cloud accounts.

    Cost / License

    • Freemium
    • Open Source (MIT)

    Platforms

    • Mac
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • Windows Phone
    • iPad
    • Linux Mobile
    • Google Chrome
    • Rust
    • F-Droid
    • Software as a Service (SaaS)
    • Docker
    • Chromium
    • Mozilla Firefox
    iOS app
    Koofr web app
    Koofr mobile app
    +4
    Koofr mobile app
    202 alternatives
    4.6
    Excellent13 reviews
  14. Readest icon
     45 likes

    Readest is a modern, open-source ebook reader for Windows, macOS, Linux, iOS, Android, and the web.

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Flathub
    • Flatpak
    Annotation
    Translation
    Wikipedia
    +2
    Dark Mode
    18 alternatives
    4.9
    Excellent8 reviews
  15. Rust icon
     158 likes

    Rust is a multi-paradigm, general-purpose programming language that emphasizes performance, type safety, and concurrency. It enforces memory safety—meaning that all references point to valid memory—without a garbage collector.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Linux Mobile
    Rust screenshot 1
    51 alternatives
  16. Beeper icon
     82 likes

    Unifies chats from 14 messaging networks in a single inbox, ensures privacy with on-device connections, and offers reminders, scheduling, and sync across devices.

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Self-Hosted
    Beeper screenshot 1
    Beeper screenshot 1
    Beeper screenshot 2
    +8
    Beeper screenshot 3
    24 alternatives
    4.7
    Excellent15 reviews
  17. Threema icon
     143 likes

    Threema is a new mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages.

    Cost / License

    • Paid
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • F-Droid
    • Flathub
    Threema screenshot 1
    Threema screenshot 1
    Threema screenshot 2
    +5
    Threema screenshot 3
    129 alternatives
    4.7
    Excellent14 reviews
  18. OnionShare icon
     119 likes

    Share files, host sites, and chat securely and anonymously via Tor using direct, password-protected onion services. No third-party servers or metadata stored.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • iPad
    • Snapcraft
    • Flathub
    • F-Droid
    OnionShare screenshot 1
    OnionShare screenshot 1
    OnionShare screenshot 2
    +14
    OnionShare screenshot 3
    70 alternatives
  19. GnuCash icon
     404 likes

    Flexible accounting software for personal and small business use, GnuCash is freely available under the GNU GPL, supporting multiple OS and financial tasks.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • PortableApps.com
    • Flathub
    Account Tree Display
    Account Tree Display
    Account Register Display
    +9
    Report Window
    308 alternatives
    3.6
    Good17 reviews